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Bearing Capacity Chart - Delmag Diesel Pile Hammers

Delmag D8-22 Single Acting Diesel Pile Hammer
Bearing Capacity ( kips ) for a Pile Set ( blows / in ) of:
Blows Per Min. Pistion Stroke (ft) Hammer Energy (ft-lbs) 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
53 5.20 9178 118 134 148 159 169 177 185 192 198 204 209 214 219 223 228 232 235
52 5.40 9531 122 139 152 164 174 182 190 197 204 210 215 220 225 230 234 238 242
51 5.60 9884 126 143 157 169 179 188 196 203 209 215 221 226 231 236 240 244 248
50 5.80 10237 130 148 162 173 184 193 201 208 215 221 227 232 237 242 246 250 254
49 6.00 10590 134 152 166 178 189 198 206 213 220 226 232 238 243 247 252 256 260
48 6.30 11120 140 158 173 185 196 205 214 221 228 235 240 246 251 256 261 265 269
47 6.60 11649 146 164 179 192 203 212 221 229 236 242 248 254 259 264 269 274 278
46 6.80 12002 149 168 183 196 207 217 226 234 241 248 254 259 265 270 275 279 283
45 7.20 12708 157 176 191 205 216 226 235 243 251 258 264 270 275 281 286 290 295
44 7.50 13238 162 181 197 211 223 233 242 250 258 265 272 278 283 288 293 298 303
43 7.80 13767 167 187 203 217 229 239 249 257 265 272 279 285 291 296 301 306 311
42 8.20 14473 174 194 211 225 237 248 258 266 274 282 288 295 301 306 311 316 321
41 8.60 15179 181 201 218 233 245 256 266 275 283 291 298 304 310 316 321 326 331
40 9.10 16062 189 210 228 242 255 267 277 286 294 302 309 316 322 328 333 339 344
39 9.50 16768 195 217 235 250 263 275 285 294 303 311 318 325 331 337 343 348 353
38 10.00 17650 202 225 243 259 272 284 295 305 313 321 329 336 342 349 354 360 365
37 10.60 18709 211 235 254 270 283 296 307 317 326 334 342 349 356 362 368 373 379
36 11.20 19768 220 244 263 280 294 307 318 328 338 346 354 361 368 375 381 387 392
35 11.80 20827 229 253 273 290 305 318 329 340 349 358 366 374 381 387 394 399 405
34 12.50 22063 238 263 284 301 316 330 342 352 362 371 380 387 395 402 408 414 420

Calculates non-factored bearing capacities based upon FHWA modified Gates formula:
Ru = [ 1.75 √E ( log 10N ) - 100 ]
where
Ru = Driven bearing capacity of the pile in kips
N = Number of hammer blows per inch
E = Energy developed by the hammer per blow in ft-lbs

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